If you have tickets in any of these sections for the Nov. 12 concert you must exchange them for seats for the added concert. If you are unable to attend on Nov. 13, you will receive a refund.

All exchanges and refunds will be handled only by the Miami Arena box office - not at the place of purchase.

Exchanges and refunds can be obtained starting at 10 a.m. Monday. Those people who can attend the Nov. 13 show will be accommodated with seats in "the same price category, but in a better location," said Ron Cohen, president of Cellar Door Concerts.

Cohen said the ticket snag was caused by a miscalculation he made when he configured the seating layout for this event.

Since Midler's production uses a theater-style proscenium stage, her show can not be viewed from many side seats. But precisely how many wasn't quite clear when Cellar Door devised the setup.

"I take full responsibility for the problem," Cohen said. "I personally apologize to anyone who is inconvenienced by this. It's not our usual way of doing things."

Midler's intricate production requires a lot of space. The arena, which can seat up to 16,000 fans for concerts, will hold just 8,200 each night for these shows.

If previous sales are any indication, tickets to Midler's Nov. 13 show ought to be gone in a flash on Saturday. The first show sold out in about 12 minutes.

But those people who need to exchange shouldn't be concerned with a quick sellout. Their new tickets will come from a special block held by Cellar Door that will not be put on sale to the public on Saturday.